|
New Versions of Classical Automata and Grammars
Soukup, Ondřej ; Solár, Peter (referee) ; Meduna, Alexandr (advisor)
Tato diplomová práce se zabývá zkoumáním nových verzí automatů a gramatik a je proto rozdělena do dvou částí. První část definuje a studuje čisté více zásobníkové automaty a navíc zavádí úplná uspořádání nad jejich zásobníky nebo zásobníkovými symboly. Práce dokazuje, že zavedená omezení snižují vyjadřovací sílu automatů. Ve druhé části práce jsou definovány a popsány nové derivační módy gramatik s rozptýleným kontextem, které zobecňují relaci přímé derivace. Je dokázáno, že jejich použití nesnižuje vyjadřovací sílu gramatik.
|
|
International trade in the Siberian sturgeon (\kur{Acipenser baerii})
KORUNKOVÁ, Eva
Sturgeon fish (Acipenseriformes) is commercially used to produce high quality fish meat and highly priced caviar. In fact, all species of Sturgeon fish are integrated into CITES appendix. Sturgeon (Acipenser baerii) is the most frequently bred/reared and the most commercial representative of its kind, not only in Europe but also in Asia. The aim of this final project is to evaluate international sturgeon trade while using CITES references from 1998-2012. The source of data(s) was commercial database CITES. Over the last 15 years, we have exported and imported almost 5000 tons and 32 million pieces of all species. During this monitored period the frequency/traffic of the trade increased. The mostly traded forms were fish eggs which were exclusively destined/designated for commercial purpose and came from those specimens which were reared in captivity - (94% from commercial activity). People mostly traded sturgeon in these forms : (1) eggs, (2) caviar, (3) extracts,(4) derivatives, (5) fish meat and others. In the last 3 years, the trade intensity in fish eggs markedly decreased. On the contrary, since 2008 there was an annual growth of/in the sale of caviar. France was not only the country of origin but also the country where there was the largest/greatest/biggest volume of market. Germany was one of the main export countries, while Armenia , if we take the quantity (kg) into account. On the other hand, The U.S. was the main import country. Sturgeon was exported in the greatest quantity to Moldavia. During the period of time mentioned above, The Czech Republic exported only twice (35 000 pieces) and imported (210 pieces) of living specimen.
|
|
Can application of any fat tax solve the obesity in the Czech Republic?
Nádvorníková, Iva ; Koblovský, Petr (advisor) ; Potužák, Pavel (referee)
Bachelor thesis focuses on so called "taxes from fat" and consequences of their application on some of the unhealthy and often consumed food in the Czech Republic. Because this tax is regressive, its main purpose should be the direct decrease of food consumption, not increase of national budget income. Therefore on some of the chosen products is calculated demand elasticity by use of regresive models and derived estimated impact of price increase for each of the products. Results indicate, that demand for all of the considered products in the Czech republic is not elastic and implementation of taxes from fat would have little impact on the reduction of unhealthy food consumption and almost no effect on decrease of obesity.
|
|
Synthesis and in vitro evaluation of pyridinium type acetylcholinesterase inhibitors.
Kopečková, Anna ; Doležal, Martin (advisor) ; Kopecký, Kamil (referee)
Title: Synthesis and in vitro evaluation of pyridinium type acetylcholinesterase inhibitors Author: Anna Kopečková Nerve agents are extremely toxic substances. As prophylactics against these compounds, reversible acetylcholinesterase (AChE) inhibitors are used in the Czech Army. The goal of the thesis was to synthesise new potential inhibitors and evaluate their in vitro inhibition activity. The compounds were designed as asymmetrical bisquaternary molecules. Their structure was derived from isochinoline and 4-benzylpyridine; these two molecules were connected with variable connecting linkages (5-12 carbons). The synthesis involved two steps. Reactions of both steps took place in acetonitrile at 70 řC. Afterwards, the compounds were purified and their identity was confirmed with NMR- analysis, mass spectrometry and elementary analysis. The Ellman's method was used for the inhibitory potential evaluation. Eight compounds were succesfully prepared. All of them showed promising inhibitory potential (IC50 values 10-7 -10-8 mol/l). The stronges inhibitors were compounds bearing heptylenic and decylenic connecting linkage (IC50 0,05 µM). The selecitivity towards AChE decreased with prolonging connecting linkage.
|
|
Moisture fluxes and precipitation in Europe
Lemarie, Petr ; Müller, Miloslav (advisor) ; Šmídová, Jana (referee)
The present thesis deals with the influnence of moisture flux and variables, it is derived from, on rainfall in Europe. Sources of this thesis are the NCAR/NCEP and the ERA-40 reanalysis and the GPCC and the ECA&D rainfall databases. A western moisture flux prevails on studied 850 hPa isobaric level, it reaches the highest intensities over the Atlantic around 55th parallel of latitude. There is the highest correlation between moisture flux magnitude and monthly rainfall in winter on the western coast of Europe and it decreases in summer and eastwards. The correlation is very weak or none in some parts of Europe, especially in the eastern Mediterranean. Extremely wet months are related with different intensive moisture flux directions in different parts of Europe, for example there is the highest correlation of monthly rainfall with the northern moisture flux in the Czech Republic. Several selected heavy precipitation episodes in Europe are presented in this thesis - during them the moisture flux anomaly is observed, but it differs in orientation and intensity. A high wind speed causes this anomaly more frequently than a humidity. This does not apply to every event, furher research is needed to draw general patterns of moisture flux during high precipitation events.
|
|
Nutrition and its impact on the physical construction of the athletes.
Vacínová, Gabriela ; Bláha, Pavel (advisor) ; Martinča, Jozef (referee)
This bachelor thesis explores the influence of nutrition on the physical composition of athletes. The present study is firmly grounded in theoretical findings derived from previously conducted studies on the same issue. More specifically, this thesis compares ideal nutrition composition of diet of athletes focusing on power sports with those athletes focusing on endurance sports. Whereas the first group strives to increase the overal weight throught a buildup of muscle weight, the second group is set either to decrease the overal body weight or at least keep such weight around a constant level. Furthemore, the study explores how specific nutrition and various dietary supplementations can be used to produce additional energy or help athletes to gain desired body weight and ideal body structure suitable for a particular sport discipline. Key words: nutrition, power sport, endurance sport, body composition
|
|
Asian crisis: reasons, consequences and comparison with the World economic crisis 2008
Nechaeva, Svetlana ; Witzany, Jiří (advisor) ; Witzany, Jiří (referee)
Asian crisis 1997-1998 has become global after financial incidents in Indonesia, Malaysia and Thailand. Asian mini-crises were followed by currencies depreciation, which were pegged to USD, also by decrease of prices of real estate, outflow of foreign financial resources and drop of share prices. Crisis expanded to HongKong and South Korea. In Autumn 1997 signs of crisis arised in Europe, Japan and USA. Less dramatic drop was on Russian, Kazakh, Ukrainian and Singapore markets. By comparing of Asian crisis 1997-98 with World economic crisis 2008 we will be able to see common features and differences. Considering mistakes made during Asian crisis, we will be able to derive possible developments of the World economic slowdown started in 2008.
|
|
Overview of the trade in specimens of rhinoceros
JEŽKOVÁ, Věra
The subject of this thesis was focused on the analysis of international trade with selected specimens of rhino species (trophies, horns, live rhinos, carvings, horn carvings, derivatives) in 2004 - 2013. The trade at the European Union, taking into accounts the position of the Czech Republic, and the global worldwide trade were evaluated in term of importer and exporter and source, purpose and origin of specimens. Evaluation was based on data from the Cites Trade Database which was further processed via contingency tables and graphs. It was found that there was a decrease of import and export in 2013. The most imported specimens were live rhinos in the world (40,5%) and trophies in the European Union, the most exported specimens were trophies in the world (39,4%) and carvings (80,7%) in the European Union. The largest importer was USA in the world (16,6%) and Spain in the European Union (3%). The largest exporter in the world was South Africa (73,9%) and United Kingdom in the European Union (4,6%). The Czech Republic was imported 0,8% of total import and exported 0,2% of total export. Imported specimens came mostly from the wild (62,1%), the country of origin was not completed and were imported mainly as hunting trophies (33,4%). Exported specimens came mostly from the wild (76,3%), the country of origin was not completed (82,2%) and were exported primarily as hunting trophies The results indicate an overall downward trend in the legal trade but also confirm the considerable interest in horns in Asia. Therefore, it is necessary to continue to monitor all transactions.
|
|
Representations and Visualization of Graphs
Štola, Jan ; Kratochvíl, Jan (advisor) ; Valtr, Pavel (referee) ; Wood, David (referee)
The 3D visibility (graph) drawing is a graph drawing in IR3 where vertices are represented by 2D sets placed into planes parallel to xy-plane and the edges correspond to z-parallel visibility among these sets. We continue the study of 3D visibility drawing of complete graphs by rectangles and regular polygons. We show that the maximum size of a complete graph with a 3D visibility drawing by regular n-gons is O(n4). This polynomial bound improves signifficantly the previous best known (exponential) bound 6n3 3n1 3 26n.We also provide several lower bounds. We show that the complete graph K2k+3 (resp. K4k+6) has a 3D visibility drawing by regular 2k-gons (resp.(2k + 1)-gons). We improve the best known upper bound on the size of a complete graph with a 3D visibility drawing by rectangles from 55 to 50. This result is based on the exploration of unimodal sequences of k-tuples of numbers. A sequence of numbers is unimodal if it rst increases and then decreases. A sequence of k-tuples of numbers is unimodal if it is unimodal in each component. We derive tight bounds on the maximum length of a sequence of k-tuples without a unimodal subsequence of length n. We show a connection between these results and Dedekind numbers, i.e., the numbers of antichains of a power set P(1; : : : ; k) ordered by inclusion.
|
|
Immigration and prices in Lebanon
Štursa, Mojmír ; Maialeh, Robin (advisor) ; Potužák, Pavel (referee)
This thesis examines the behavior of prices following the unexpected arrival of a large number of immigrants from Syria to Lebanon between 2012 and 2014. Using Lachs model with monthly data about prices, number of immigrants and natives, the total effect of immigration on lebanese prices was estimated. The final estimation that a one-percentage-point increase in the ratio of immigrants to natives decreases prices in Lebanon by 0,21 percentage-point, is consistent with introduced hypothesis and theory. It is argued that the reason for decrease are mainly lower immigrants wages which derive from their lower qualification.
|
guest ::
